In pics: Sniffer dog training center in Shanghai (1/5)

A sniffer dog receives training at a training base in Shanghai, May 19, 2020. Short video series about a police dog named Yezi and its role in the battle against coronavirus in Shanghai went viral online recently. (Photo: China News Service/ Yin Liqin)

A sniffer dog receives training at a training base in Shanghai, May 19, 2020. Short video series about a police dog named Yezi and its role in the battle against coronavirus in Shanghai went viral online recently. (Photo: China News Service/ Yin Liqin)

A sniffer dog receives training at a training base in Shanghai, May 19, 2020. Short video series about a police dog named Yezi and its role in the battle against coronavirus in Shanghai went viral online recently. (Photo: China News Service/ Yin Liqin)

A sniffer dog receives training at a training base in Shanghai, May 19, 2020. Short video series about a police dog named Yezi and its role in the battle against coronavirus in Shanghai went viral online recently. (Photo: China News Service/ Yin Liqin)

A sniffer dog receives training at a training base in Shanghai, May 19, 2020. Short video series about a police dog named Yezi and its role in the battle against coronavirus in Shanghai went viral online recently. (Photo: China News Service/ Yin Liqin)